Window-screen



6.1. KARRO. WINDOW SCREEN.

APPLICATIONVFILED NOV. 2l, 1919.

Patented Mar. 30, 1920.

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I @ifo/mwa NITE STATES PTN OCE.

GUsTAvE J. KARRQOFNEW YORK, N. Y.

WINDOW-SCREEN.

Specification of Letters Patent. Patented iwal. 30, 1920.

Application lyed November 21, 1919. Serial 1\To. 339,633.

To all whom t may concern rod or bar adapted yto extend'acros's thewindow, having its terminals secured to the op-` posite sides of thescreen in a manner whereby the rod exerts a lateral pressure upon thescreen to hold it effectively positioned upon the window.

More specifically stated, the locking rod includes two pivotallyconnected sections to permit the rod to break in the center when it isdesired to remove the screen from the window, but when the sections aremoved to horizontal alinement, they exert a pressure against the screento hold the latter immovably arranged upon the window casing.

Another important object ot the invention, resides in the provision of alocking rod for this purpose wherein the pivoted extremities of therespective sections of the rod operate within a casing including keyactuated locking mechanism for holding the respective sections ot' therod fixed relatively in activevpo'sition, so that the rod cannot bebroken in the center by children playing about the screen. f

A further object of the invention resides in the use of a locking rodfor the purpose mentioned, and which rod 'is susceptible of adjustmentto vary its length, so that the rod can be used in connection withscreens or' different widths.

@ther objects and advantages will appear when the nature and advantagesot the invention is better understood from the tollowing detaildescription when taken in'con-4 nection with the accompanying drawings,the invention residing in the construction, combination and arrangementof parts as claimed. l l

In the drawing forming part of this speciication like numerals otreference indicate similar parts in the several views and where- Figure1 is a front elevation showing the screen arranged in the window, thelocking element being indicated in its active position by full lines,and in inactive position by dotted lines. l

F ig. 2 isa vertical. sectional view taken through the lock casingshowing the manner of locking the rod sections in active position.

F ig. y3 is a sectional view taken on the line 3 3 ot'Fig. 1.

Fig. A is a view of the key.

Referring to the drawing in detail, A i'n- .dicates generally a screenof the usual well known construction, including theV side members 1()and upper and lower members 11 unitedly defining thel trame ot thescreen 'which supports the screen fabric 12. The screen as shown is ofthe `extensible type,

wherein .the respective sections slide laterally to allow the screen toaccommodate itself to windows of different widths. The side members 10are of the usual channel `formation in cross section, and each of thesemembers is provided with a strip of rubber Orother suitable material 13,so that the against the side of the window casing.

The attachment forming the subject inatter of my invention comprises alocking rod adapted to extend across the screen, and associated with thelatter in a manner whereby the screen is effectively held in positionupon the window to prevent the screen 'from being casuallypushed out bychildren, which frequently results in the loss ot' lite by childrenfalling through a window. The locking rod as shown, is made up of twosections 14:, each being identical in construction and formed withobliquely disposed extensions 15 which are pivotally connected togetheras at 16. The outer extremity ot each section is provided with aplurality of openings 17 adapted to register with similar openings 18 ofan adjustable section 19 which allows the rod as a unit to be varied inlength to accommodate itself to screens ot diiferent widths as will bereadily understood. Fastening elements 2O are passed through the alinedopenings of the sections 14 and 19 respectively, to hold these sectionsixed relatively in a given position. Each section 19 is hingedly securedto the adjacent side 10 of the screen, the hinge connection being o1screen may obtain an effective purchase any suitable construction. j By'reason or tne construction thus far described, it is manifest that thelocking rods may be broken in the center to allow the sections 14 toassume the position illustrated by dotted lines in Fig. 1, in whichposition, the respective sections of the screen are drawn toward eachother out of engagement with the window casing. However, when thesections 14 are moved into horizontal alinement. the respective sections.of the screen are moved away from each other into effective engagement'with the adjacent side` of the window casing, the rod in this instance,exerting a lateral pressure against the sections of the screen to holdthe latter immovably positioned upon the window casing.

With a view @flocking the sections 14 of the rod in their activepositions, so as to prevent the rod from being broken by childrenplaying about the screen, I provide a locking casing 22 which is ofcylindrical formation in cross section as shown in Fig. 2. The oppositesides of the casing 22 are provided with elongated slots 23 for thereception of the adjacent or pivoted extremities of the sections 14 ofthe rod. Arranged within the casing 22 is a key actuated lockingmechanism, designed to engage the adjacent extremities of the sections14 to hold the latter fixed relatively in a-ctive position. Thismechanism includes by preference a pair of locking dogs 24 pivoted as at25. Each dog is designed to engage over the hook like extremity 26 ofthe adjacent section 14 of the rod, being normally maintained in thisposition through the instrumentality ofV the Y lsprings 27 which areterminally secured to the casing 22 and to studs projecting from thedogs 24. Each dog is provided with an extension 28, and when the partsare arranged in the manner illustrated in Fig. 2 these extensions 28 liein parallelism at the opposite sides of the key hole slot 29. A key ofthe design illustrated in Fig. 4 is adapted to be Vinserted in the keyhole 29, and when turned in either direction, the wings 30 of the keyare brought into engagement with the extensions 28, moving the dogs upontheir pivots out of engagement with a hook like extremity 26 of thesections 14. Subsequent to the release of the sections 14, the casing 22is elevated to the position shown by dotted lines in Fig. 1, thesections 14 being free to move upon their pivot 16. During this movementof parts, the screen sections are drawn toward each other out ofengagement with the window casing as hereinabove described permittingthe screen to be readily removed.

With a view of bracing the screen when placed in position for use, Iprovide the upper and lower members 11, of the screen frame vwith hooks31 and 32respectively. The hook 31 is designed to engage the lower railof the window sash 33, when the window is elevated to the positionillustrated in Fig. 1, while the hook 32 carried by the lower member ofthe screen section is designed to engage over the window sill. Thesehooks 31 and 32 coperate with the sections 14 of the rod to effectivelyembrace the screen at four points, when the parts are arranged in themanner shown in Fig. 1.

While it is believed that from Vthe foregoing description, the natureand advantages of the invention will be readily apparent, I desire tohave it understood that. vI do not. limit myself in this connection,the. same being merely illustrative, and that such changes mayberesorted'to when desired as fall within the scope of what isclaimed.

Having thus described my invention what I claim as new is 1. Thecombination with a windowvscreen having sliding sections, of a rodarranged across the screen and pivotally secured tothe sides thereof,said rod including pivotally connected sections coperating to hold thesections of the screen in effective engagement with the window casing,and means for holding said sections fixed relatively in active po-lsition. l

2. The combination with a window screenk arranged across the screen andhaving itsv outer ends pivotally connected to the sides thereof, theadjacent ends of said sections of the rod being V.pivotally connectedtogether, said rod sections cooperating to hold the sections of thescreen in effective engagement with the window casing, a lock casingcarried by the adjacent extremities of the rod sections, anda keyactuated mechanism for holding the rod sections fixed relatively inactive position.

4. The combination with a window screen having sliding sections, of asectional rod arranged across the screen and having its youter endspivotally connected with the sides thereof, the adjacent extremities ofsaid sections of the rod being pivotally connected together, a casingsupported by the pivot ofthe rod section and receiving the adjacentextremities thereof, said casing having opposed slots for the receptionof the rod sections, and key actuated spring pressed dogs pivoted withinthe casing and operable to hold the rod sections xed relatively inactive position.

5. The combination with a Window screen having sliding sections, of asectional rod arranged across the screen, and having its outer endspivotally connected t0 the sides thereof, thel adjacent extremities ofsaid rod sections being pivotally associated, a lock casing receivingthe adjacent extremity of said rod sections and carried thereby, keyactuated mechanism Within the casing for vholding the rod sections fixedrelatively in active position, and each rod section being adjustable,whereby the length of the rod as init may be varied for the purposespeci- 6. The combination With a Window screen having sections, of asectional rod arranged across the screen and terminally connected to thesides thereof to hold the screen sections in effective engagement Withthe Window casing, a lock casing receiving the adjacent extremities ofthe rod sections, said extremities being pivoted, and means Within thecasing for holding said rod sections iixed in active position. j

In testimony whereof I affix my signature.

GUSTAVE J. KARRO.

